JPH033006U - - Google Patents
Info
- Publication number
- JPH033006U JPH033006U JP6211389U JP6211389U JPH033006U JP H033006 U JPH033006 U JP H033006U JP 6211389 U JP6211389 U JP 6211389U JP 6211389 U JP6211389 U JP 6211389U JP H033006 U JPH033006 U JP H033006U
- Authority
- JP
- Japan
- Prior art keywords
- input
- information signal
- programmable controller
- input device
- constant current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Programmable Controllers (AREA)
Description
第１図は本考案実施例の基本構成を示す回路図
、第２図は本考案実施例の具体的な構成を示す回
路図、第３図および第４図はそれぞれ従来例の回
路構成を示す回路図である。
１ａ……入力端子、１ｂ……コモン端子、２ａ
……制限抵抗、３……ダイオードブリツジ、４…
…フオトカプラ、５ａ，５ｂ……整流用ダイオー
ド、６ａ，６ｂ……トランジスタ、７……コンデ
ンサ、８……バリスタ、９……定電流回路、１０
，１１……ツエナーダイオード。
Figure 1 is a circuit diagram showing the basic configuration of the embodiment of the present invention, Figure 2 is a circuit diagram showing the specific configuration of the embodiment of the invention, and Figures 3 and 4 are circuit diagrams of conventional examples, respectively. It is a circuit diagram. 1a...Input terminal, 1b...Common terminal, 2a
...Limiting resistance, 3...Diode bridge, 4...
...Photocoupler, 5a, 5b... Rectifier diode, 6a, 6b... Transistor, 7... Capacitor, 8... Varistor, 9... Constant current circuit, 10
, 11... Zener diode.
Claims (1)
た情報信号の電圧レベルを変換してプログラマブ
ルコントローラ本体へ出力するプログラマブルコ
ントローラの入力装置において、前記情報信号の
入力側の入力制限抵抗に定電流回路を直列に接続
したことを特徴とするプログラマブルコントロー
ラの入力装置。 In an input device for a programmable controller that inputs an information signal from an external device, converts the voltage level of the input information signal, and outputs it to the programmable controller main body, a constant current circuit is connected to the input limiting resistor on the input side of the information signal. An input device for a programmable controller characterized by being connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6211389U JPH033006U (en) | 1989-05-29 | 1989-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6211389U JPH033006U (en) | 1989-05-29 | 1989-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH033006U true JPH033006U (en) | 1991-01-14 |
Family
ID=31590968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6211389U Pending JPH033006U (en) | 1989-05-29 | 1989-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH033006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100989696B1 (en) * | 2007-10-08 | 2010-10-26 | 박윤호 | Swivel backrest chair |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59146305A (en) * | 1983-02-10 | 1984-08-22 | Hitachi Ltd | Voltage input type programmable controller |
| JPS6332607A (en) * | 1986-07-28 | 1988-02-12 | Matsushita Electric Works Ltd | Input circuit |
-
1989
- 1989-05-29 JP JP6211389U patent/JPH033006U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59146305A (en) * | 1983-02-10 | 1984-08-22 | Hitachi Ltd | Voltage input type programmable controller |
| JPS6332607A (en) * | 1986-07-28 | 1988-02-12 | Matsushita Electric Works Ltd | Input circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100989696B1 (en) * | 2007-10-08 | 2010-10-26 | 박윤호 | Swivel backrest chair |